Padlock



(No Model.) C. H. BRGDEN. i

PADLOGK.

No. 604,577.. Patented May 24,1898.

Nrrnn Sra'rns a'rnn'r risica CHARLES H. BRIGDEN, OF CANTON,MASSACHUSETTS, ASSIGNOR TO SQM. HAWES, JR., OF YONKERS, NEW YORK.

enoteca.

SPECIFICATION forming part of Letters Patent No. 604,577, dated May 24,1898.

APPGZL'GOII filed September 3, 1897. Serial No. 650,904. (No model.)

T0 @ZZ whom t may concern,.-

Be it known that I, CHARLns H. BRIGDEN,

of Canton Junction, in the county of Norfolk and State of Massachusetts,have invented certain new and useful improvement-s in Locks, of whichthe following is a specification.

This invention has relation to locks and latches, and particularly tothat class known as padlocks and it has for its object to provide asimple lock of the character described which shall be constructed of aminimum number of parts and which shall be proof against being picked orunlocked except by means of the proper key.

Another object of the invention is to provide a padlock in which theparts may be all secured in place without the employment of screws orrivets, whereby they may be assembled with great ease and with theexpenditure of a small amount of time.

To these ends the invention consists of a lock possessing thosefeatures, parts, and characteristics which I shall now proceed todescribe in detail and then point out in the claims hereto annexed.Reference is to be had to the accompanying drawings, and to the lettersmarked thereon, forming a part of this speciiication, the same lettersdesignating the same parts or features, as the case may be, whereverthey occur.

Of the drawings, Figure l illustrates in side elevation a padlockembodying my invention in which the locking member is in the form of apin secured upon the end of a chain, this being particularly adapted foruse as a bicycle-lock. Fig. 2 represents the casing of the lock invertical section, with the tumblers in side elevation. Fig. 3 representsa section on the line 3 3 of 2. Fig. 4 represents another embodiment ofthe invention, in which the locking member is pivoted in the end of thecasing. Fig. 5 represents the tumblers detached. Fig. 6 represents theblock which is inserted in the front end of the casing. Fig. 7represents the block or frame inserted in the other end of the casin gand in which the hasp is hinged. Fig. 8 represents the key employed foroperating the tumblers to release the locking member. Fig. 9 representsanother embodiment of theinvention, in

which the locking member is pivoted directly to the casing.

Referring more particularly to Figs. l to 3, inclusive, the letter aindicates the casing, which is tubular in form, with the end a closed.In the open end of the same is forced a cylindrical plug or block b,having an axial slot b and a transverse recess or aperture b2, whichwhen the block or plug is in place is in alinelnent with apertures a2 inthe sides of the casing, near the open end thereof.

The tu mblers are indicated by o, c', and c2, respectively, and consistof flat metallic plates placed with their faces contiguous and withtheir upper end iitting snugly in the slot b in the block or plug b. Incross-diameter they are smaller than the internal diameter of the casingexcepting at their rear ends, where they are laterally extended, as atc3, to form corners which press slightly against the inner walls of thecasing. The central tumw bler c is provided witha pin projectingtransversely therethrough into curved slots c5 in the other tumblers cc2.

A V-shaped leaf-spring d is inserted in triangular apertures c6 in theinner or rear ends ofthe tumblers and operates to hold the said tumblerswith their median lines at an angle to each other, as shown in Fig. 3.The said tumblers are all provided with apertures c7 in their upper orouter ends,which normally do not register with the apertures a2 b2, butwhich when the tumblers are moved by the key register with each otherand with the said apertures for the purpose of releasing the lockingmember. Said locking memberis indicated by e, and consists of a pinhaving a reduced portion e' and a pointed conical end e2. lt is formedon its outer end with an eye e3, to which one end of the chain f issecured and which has its other end secured to an eye j, secured in oneof the apertures a2 in the casing. When the said locking member isthrust into the apertures a2 b2 in the casing and plug, the conical ende2 enters the apertures c7 and forces the tumblers into alinement untilthe said conical end passes through the last tumbler c, whereupon thespring d immediately throws them out of alinement, so that it isimpossible to withdraw the said locking member without the aid of akey,the

about the aXis of the pin.

edges of the tumblers bounding the apertures cfforming stops to engagethe base of the head e2 of the locking member. The rear or inner ends ofthe tumblers press against a coiled spring g, resting upon the end a ofthe casing,Which spring operates to normally thrust the said tumblerslongitudinally, so that the` apertures alare slightly lbeyond theapertures h2 d2. In order to move the tumblers edge- Wise relatively toeach other and longitudinally of the casing to bring the apertures c7 inalinement with each other and With the apertures a2 h2, the tumblers areprovided with central apertures h, forming shoulders h. Then thekeyt'being passed through the l keyhole d3 in the casing, the Wards t"engage edges in the apertures in the said tumblers@ and move themagainst the tension of .the f springs d and g until the said aperturesc7 are in position to permit of the hasp being Withdrawn.

In Figs. t to '7, inclusive, the invention 4is i shown as embodied in alock in which the i locking member 7c is semicircular in side elevationand is formed With a laterally-projecting pin 7a', as shown in Fig. il.The squared end 7a2 of the said member is fitted in a slot l' in a blockor frame Z, Which is slipped into the open rear end of the casing a, andthe pin ,76' lies in a transverse lslot Z2 in the said block, so thatwhen the block or frame is in place the locking member may be swung Theother end lof the ,casing is Aclosed by the block h, which has aperturesh2 to receive the conical .end 7a3 and the reduced portion 7a4 of thelocking member. The tumblers are similar to those above described andthey are operated in the same manner by a key to allow the lockingmember to be disengaged therefrom. A spring m is placed between theshoulde-r 765 on the end k2 of the locking member and the casing, sothat when the tumblers are thrust into position by a key to release thelocking member the spring forces the locking member into the positionshown in Fig. 4.

In Fig. 9 the locking member is pivoted in v the casing by a pin n, andthe spring 0 is inserted ina socket in the said casing. In this i figurethe casing is shown as being formed kof a metallic block With acylindrical aperture therein instead of a tube.

From the foregoing it Will be observed that the parts of the lock areeasily assembled and are simple and may be constructed With facility.The casing may be formed 0f a tube cut into suitable lengths, and thetumblersi may be stamped out of flat or metallic sheets.

The plugs `b and lare held in place by frictional engagement With theWalls of the casing, and When the hasp is engaged by the tumblerssaidplugs cannot be Withdrawn, as

will be readily understood. It is evident that the invention may be emlbodied in other forms, and hence I do not ini tend to be understood aslimiting myself to 1 those particular locks which I have selected for4the purpose of illustrating the invention.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, though Without attempting to set forthall of the forms in which it may Abe made or all of the modes of itsuse, I declare that What I claim is- 1. In a lock, the combination witha casin g, ,of two or more flat apertured tumblers arranged side by sideand movable edgewise and longitudinally, and a locking member movableinto and out of an aperture in the casing, and adapted to enter theaperture in said tumblers whereby it may be locked in place.

2. In a lock, the combination with a casing having a transverse aperturein the end adapted 'to receive a locking member, and also having akeyhole, a plug kor block inserted in the said casing to close the endof the same and formed With a slot or recess, tWo or more fiat tumblersarranged in the recess, said tumblers having apertures normally out ofalinement with each other and adapted to be vmoved to bring theapertures into alinement with the apertures in the casing.

3. In a lock, the combination with a tubular casing, a block closing oneend thereof, and a plug or frame closing the other end thereof, of alocking member arranged to have its ifree locking end enter an aperturein the cas- `ing and block, and locking devices in the casing adapted toengage the said locking members when it is so inserted.

4. A lock comprising in its construction a cylindrical casing, one ormore fiat tumblers arranged side by side in said casing and having stopsto normally prevent movement of the locking member, a locking memberadapted to be engaged by the tumblers, and means on the said tumblerswhereby they may be engaged by a key and moved thereby longitudinallyand edgewise to liberate the end of said locking member.

5. In a lock, the .combination with a tubular casing, andlocking-tumblers in said casing, of a frame or plug closing one end ofthe casing, and a locking-member hinged in said frame or plug andswinging about the axis transverse thereto and adapted to have itslocking end engaged by the tumblers at the other end of the casing.

6. In a lock, the combination with a cylindrieal casing,locking-tumblers in the casing, and alocking member, of a removable plug0r frame inserted in the end of the casing in which the said lockingmember is hinged, and a spring bearing against said locking member tohold it normally in its unlocked position.

7. In a lock, the combination with a casing having `a straightcylindrical aperture and locking-tumblers in said aperture adapted to bemoved both longitudinally and transversely edgewise, of a locking memberhinged IIO at one end of said easing and adapted to be engaged by thetumblers at the other end of the casing.

8. A look comprising in its construction an open-ended easing andtumblers in said oasing free from Connection therewith, a block closingone end of the easing and held therein by frictional Contact with theWalls of said casing, said block and easing having bolt-receivingapertures, a plug or frame closing the other end of the easing and heldtherein by friotional Contact with the walls of said easing, and alooking member hinged in said frame and adapted to engage the saidtumblers and the said apertures, whereby all of said parts are securelylooked in and with the casing.

` CHARLES H. BRIGDEN.

Witnesses:

MILTON S. BRADT, JOHN J. WALSH.

